I think it would be an interesting experiment to put a family or a group of people into one big warehouse space with movable walls plus power and plumbing easily moved around and just see how the space ends up being configured over time. Do you end up with separate bedrooms for everyone as far away from each other as possible? Does everyone tend to get their own living space, or are we happy with one to share? Would people try really unusual things like a single washbasin in a bedroom instead of a full ensuite?
It would all depend on the type of people you put in the space, of course. Fiercely individual people would probably end up in more of an apartment setup, with everything self-contained. Families might use more space than they expect. Single people might find themselves happy with relatively small living spaces and lots of storage.
Mokalus of Borg
PS - I guess I've been thinking about living spaces lately.
PPS - My interests come and go in waves.